Protective coating for power electronics – reliable protection and optimized solder connections

Protective coatings and interface coatings for converters in power electronics provide durable corrosion protection and ensure strong and reliable soldered and sintered connections as well as insulation between power electronics components.

Corrosion protection

Extends the service life of the component
Increases system stability
Protects the copper cooler from coolant

Interface support

Improves long-term strength of sintered or soldered materials
Increases solderability and sinterability (Ag and Cu pastes)
Improves wettability

Insulation layer

Insulates electrically with high thermal contact capacity

What are protective and interface coatings?

Protective and interface coatings are specialized protective coatings for power electronics that inhibit corrosion and improve thermal properties.

Thanks to innovative full and partial coating technologies, these protective coatings are specifically designed to:

Extend the service life of heat sinks

Ensure reliable dissipation of heat

Enable optimum solder connections

Insulate electrically but provide thermal contact capacity

Challenges in power electronics

Without protective and interface coatings for power electronics, various problems can arise that impair efficiency and ultimately shorten the service life of components:

Corrosion & oxidation — Uncoated heat sinks are susceptible to environmental influences that inhibit heat dissipation.
Poor solder connections — Uneven or inconsistent solder connections result in a loss of power and cause electrical faults.
Increased thermal resistances — Without optimized coatings, heat dissipation can be inefficient, which reduces the service life of components.
Material wear — Abrasion or damage to surfaces can occur without a protective coating.
Unreliable electrical connections — Poor coating quality can cause contact problems and electrical malfunctions.

Protective and interface coatings provide an effective solution to eliminate these challenges and maximize the reliability and performance of electronic components.

Would you like to find out more about Miba’s protective coatings for power electronics?

Elisabeth Schneiderbauer
Application Expert / Technical Sales

Get in touch now!

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Your advantages with protective and interface coatings from Miba

One-stop shop — Complete solutions with electroplating/wet-chemical, PVD and spray coatings from a single source.

System provider for heat sinks — Comprehensive support for baseplates, closed cooling systems, and design optimization.

Flexible coating options — Full or partial coatings, customized to meet specific requirements.

Wide range of materials — Compatible with copper, aluminum, ceramics, as well as sintered, forged or extruded materials.

Optimized component preparation — Anti-aging and vacuum packaging conditioned for reliable assembly.

End-to-end traceability — Marking systems for quality assurance and process control.

Why Miba?

Miba is your expert for high-performance coating technologies that guarantee efficiency, durability and quality.

One-stop shop for a range of coating technologies, including raw parts and logistics concepts

Innovative manufacturing processes — Automated and optimized processes for maximum precision and efficiency.

Scalable production capacities — Custom solutions for medium to high volumes with consistent quality.

Full service support — Miba is with you from development and series production to packaging and logistics.

Useful information & technical data

Find out more about the technical properties and advantages of our innovative coating technology for protective coatings for power electronics in the folder

Folder Protection and interface coatings for power electronic converters

FAQ: Frequently asked questions about our protective coatings for power electronics

Which functions do protective coatings offer for power electronics?

The coatings protect against corrosion, improve long-term stability and ensure reliable electrical insulation with high thermal conductivity.

How do coatings improve solder connections?

They increase wettability, improve solderability and optimize the long-term stability of sintered and soldered connections.

What are the advantages of a one-stop shop?

Optimally coordinated processes ensure optimum quality and cost effectiveness. Shorter logistics routes, shorter processing times, lower risks of damage and reduced carbon footprint.

Which materials can be coated?

The coatings are suitable for copper, aluminum, ceramics, as well as sintered, forged and extruded heat sinks.

Are there different coating options?

Yes, both full and partial coatings are possible. Depending on requirements, either the whole component, or only the relevant areas, can be coated.

How is the quality of the protective coatings for power electronics ensured?

Fully automated processes allow end-to-end traceability across the entire process chain.

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